Drive stud fastener



June 27, 1950 o. J. POUPITCH DRIVE s'mn FASTENER Z I INVgZLOR. 54Egg/65% Filed Jan. 25, 1949 Patented June 27, 1950 UNITED STATES PATENTOFF ICE DRIVE STUD FASTENER Ougljesa Jules Poupitch, Chicago, Ill.,assignor to Illinois Tool Works, Chicago,

of Illinois Ill., a corporation Application January 25, 1949, Serial No.72,667

10 Claims.

This invention relates or mounting devices or clips having a deformableVarious forms of fastening and mounting devices for securing objects towork pieces and have heretofore been provided. Many of these themulti-part type, includ mass production industries. The presentinvention is therefore concerned primarily with the provision of asimple, preferably one-piece, fasportion to a support, work piece, orpanel.

More specifically, the present invention conview similar to Fig.

templates a fastener of'the type referred to above panel.

A further object of the invention is to provide a one-piece fasteningdevice having stud and anvil portions insertable through a work aper-=,fiected by the anvil into positive interlocking engagement with theinner surface of the panel.

The foregoing tages will be more apparent from the following detaileddescription when considered in connection with the accompanying drawingwherein:

Fig. l is a fragmentary perspective viewof a pair of angularly disposedwork pieces having of the present invention;

Fig. 2 is a view in perspective of one of the clips of Fig. 1 detachedfrom the work pieces;

' Fig. 3 is an enlarged fragmentary perspective 1 with the mouldingsremoved so as to more clearly illustrate the functional and structuralcharacteristics of the fastener;

Fig. 4 is a fragmentary view in elevation taken from the inside surfaceof the work piece or panel with the clip in mounted position;

and other objects and advana Fig. 5 is a fragmentary view in verticalsection taken substantially along the line 5-5 of Fig. 3;

Fig. 6 is a view in horizontal section taken alon the line 6-45 of Fig.2, but with the clip associated with the work piece or panel;

Fig. '7 is a view in horizontal section taken sub stantially along theline 1-4 of Fig. 3; and

Fig. 8 is a plan view of the one-piece stamped sheet metal blank fromwhich the fastener of Figs. 1 to '7 is formed.

Referring now to numerals have been employed to designate similar partsthroughout the various figures, it will be seen that one embodiment ofthe fastening device or clip contemplated by the present invention isdesignated generally by the numeral H3 in Figs. 1 to '7 inclusive.

In Fig. 1, two of the clips 10 are shown applied to a pair of angularlydisposed work pieces or panels l2 and M which are secured at the apex ofthe angle in any convenient manner, it being desired to cover thejoinder by a moulding strip IS. The moulding strip It has inturnedflanges l8 and is held in position by the fasteners iii.

The fastener clip or mounting device [0 includes a body portion and headportions which may be somewhat resilient and are formed by margins ofthe body portion 20, the head portion or lower margin 22 being bent outof the plane of the plate-like body portion 20 to the required angle andprovided with a bifurcated, rolled margin, or beads 24. The oppositemargin of the plate-like body portion 28 is curved, bent or offsetslightly out of the plane of the plate-like body portion to provide ahead portion having curved end lips or lugs 26 which may be somewhatresilient in a direction normal or transverse to the work piece 12 butare substantially rigid endwise or longitudinally of the lugs.

The material in the center of the plate-like body portion 20 is struckout to provide an upsetting anvil or prong deflecting section 28comprising a central portion 30 substantially in the plane of the bodyportion 20, rearwardly extending arms 32 and oppositely projectinglateral extensions or portions 34, substantially parallel to theplate-like body portion 20 and its inner surface spaced from the innersurface of the work piece l2, the work piece [2 having an opening oraperture 35 to receive the upsetting anvil or prong deflecting section28 of the fastener.

A stud section 38 is formed integrally with the plate-like body ortion20 for the marginal head portions 24 and 26. This stud section consistsof an elongated portion or arm 40 extending over the plate-like bodyportion and the upsetting anvil or prong deflecting section The oppositemargins of the arm at its inner end are formed with inwardly extendingdeflectable prongs 42, the inner ends 44 of which curve or projectoppositely and outwardly. The inner end of the arm 40 and the oppositeprongs 42, form in initial, unfastened position, a substantiallyU-shaped, expandable stud having oppositely deflectable legs embracing,or adapted to embrace, the central section of the upsetting anvil andthe rearwardly extending arms thereof and the free end portions 44engaging, or adapted to engage, the laterally extending and prongdeflecting end sections 34 of the upsetting anvil.

The fastener I'O may be formed from a onepiece sheet metal blank 46,Fig. 8, the body 48 of the blank being stamped in the form of an Hhaving the central portion or cross bar of the H cut and bent to formspaced apart generally the drawing wherein like by which the studsemi-circular openings 50 and 52 divided by the central cross piece 54,the openings being formed by stamping out the generally semi-circularsections which are bent backwardly to form the rearwardly offset lugs 56and 58 integrally joined to the cross piece 54 by suitable arms, crosspiece 54 and the lugs 56 and 58 and the connecting arms forming theanvil 28 of the completed fastener 10. Between the upper vertical armsof the H blank 48 there is formed a T-shaped section 69, the leg of theT being longer than the upper arms of the H and the cross bar of the Textending over the H portion of the blank. The cross bar of the T formson bending the substantially U-shaped stud section 38 while the leg ofthe T forms the arm 40 of the completed fastener section 30 isintegrally joined to the body portion of the fastener.

In initially applying the fastener Ii] to the work piece l2, the anvil28 is inserted within the complementary aperture 36 in the workpiece l2,as clearly illustrated in Fig. 6. It will be seen that luring thisinitial insertion the body portion 28 and the stud section 38 assume theposition shown in Fig. 6 in which the body portion abuts the surface ofthe work plate l2 and the stud section 36 embraces the side arms 32 ofthe anvil and extends from the anvil with the base of the U- shaped studsection substantially spaced from the central portion 30 of the anvil inprojecting relation to receive the blows of a hammer or other drivingtool. On driving of the stud inwardly relative to the body portion 20,the laterally directed extensions or anvil portions 34, engaging thecurved ends 44 of the arms of the stud, spread the stud arms laterallyand cause them to curve outwardly and inwardly toward the inner surfaceof the work piece or panel l2 until the ends of the stud arms are drivenover the opposite edges of the aperture 36 in the work piece so as tosecure the fastener against withdrawal from the work piece and then aredriven into positive work clamping engagement between the flanges 34 andthe inner surface of the panel thereby drawing the fastener into tightand firm permanent abutting engagement with the outer surface of thework piece. The object or article to be mounted on the work piece orpanel l2 may be assembled with the object securing, attaching, ormounting portions of the fastener, such for example as the portions 24and 26, after the fastener is assembled with the work piece. In theembodiment disclosed, where the fastener is formed to secure a moldingto the work piece I2 to overlie the area of joinder of the panel l2 tothe panel I4. the moulding is assembled with the fastener after itsapplication to the work piece l2 in the manner as shown in the full anddash lines in Fig. 5. This is accomplished by first inserting the upperinturned flange l8 of the moulding between the lips or lugs 26 and thenswinging the moulding downwardly over the fastener so that the lowerflange it of the moulding snaps over the rolled margin or beads 24 ofthe fastener, the lateral resilience of the moulding being primarilyutilized to effect assembly of the moulding with the fastener, althoughthe head portion or lower margin 22 of the fastener may be somewhatresilient so as to permit the introduction of the lower flange 18between the margin of beads 24 and the surface of the panel l4 and theconsequent clamping of the flange or moulding to the panel M by therolled margin or beads 24, all as shown in Fig. 5.

It will be seen that in the disclosed embodiment the fasteners Ill maybe applied in a very simple manner to the work piece and the mouldmentof the fasteners is readily correctible on or at the time of assembly ofthe moulding with the line of fasteners.

It will be evident that the head portions or pposite margins 22 and 26of the fastener function to clampingly hold the opposed margins of themoulding strip firmly in position on the work panels I2 and I4.

From the foregoing it will be apparent that applicant has provided asimple, preferably onepiece, fastener, mounting device or clip whichovercomes or avoids the defects or insufliciencies of prior devices, andmore particularly, a fasten ing or mounting device having an objectsupporting, attaching, or body, portion including an upsetting anvil anda stud member, preferably integral with said portion, and having aplurality'of prongs to be upset by the anvil on driving of the studmember so as to secure the mounting, attaching or body portion to asupport, work piece, or panel; a fastener of the type referred topreviously which may be stamped from a sheet or strip, such as sheetmetal, the article or object mounting or body portion providing anupsetting anvil adapted to be inserted through a work aperture andanother portion or stud designed for driving into engagement with theanvil to be deformed or deflected thereby into locking engagement withthe opposite side of the work aperture, thereby positively to interlockthe article mounting or body portion with the work piece, plate orpanel; a one-piece fastening device having stud and anvil portionsinsertable through a work aperture from one side thereof and adapted ondriving of the stud to deflect or deform the stud laterally of the workaperture to engage and positively interlock with the opposite side ofthe work aperture; a blind fastener, of the positive interlocking type,in one piece, and preferably of a one-piece sheet metal stamping; and amoulding clip or fastener having a head portion or portions adapted forsnap fastener engagement with the or the like, a body poranvil, and astud portion having a plurality of prongs formed intein a panel on whichthe moulding is to be mounted to be deflected by the anvil into positiveinterlocking engagement with the inner surface of the panel.

While, for purposes of illustration, certain structural embodiments havebeen shown in the drawings, it will be apparent that other modificationsand changes are contemplated without departing from the spirit and scopeof the appended claims.

The invention is hereby claimed as follows:

1. A blind fastener comprising a body member adapted on driving oversaid anvil into a work aperture from one side thereof to be deformedlaterally over the other side the fastener to the work piece.

2. A blind fastener comprising a one-piece deformed laterally over theother side of said part to secure the member to the part.

5. A blind fastener comprising a sheet metal 6. A'blind fastenercomprising a sheet metal member having an object mounting portionadapted for bearing engagement with an apertured part, an objectmounting portion, a stud said part to secure the fastener thereto.

'7. A blind fastener comprising a sheet metal member adapted to havebearing engagement on body portion, said body portion having spaced Wingportions offset fromt he plane of said body portion and adapted to beinserted in an apertured work part, and a driving stud portioncomthereof to secure prising a pair ofspaoed prongs positioned to ensaidbody portion having an upsetting anvil porgage and to be deformedlaterally "by said wing tion adapted to be inserted in the aperture inthe portions on driving of said stud portion to sework part, and anexpandable stud portion cure the'fastened to the apertured work part.formed integrally with said body portion and 9. A drive stud fastenercomprising a one- 5 adapted on driving over said anvil portion towardpiece sheet metal member having a body portion said body portion to beexpanded into engagement adapted for bearing engagement with an aperwiththe work part on the side opposite that entured part, an object securingportion, said body gaged by the body portion.

portion having oppositely extending wing portions OUGLJESA JULESP'OUPITCH. offset from the plane of said body portion and 10 adapted tobe inserted in the aperture in said REFERENCES CITED Part and anexpandable Stud Portion having The following references are of record inthe deflectable prongs adapted on driving of the stud file f thispatent; portion from one side of the work part to engage UNITED STATESPATENTS and be expanded by said wing portions over the 15 opposite sideof the work part to secure the sheet Number Name Date metal member tothe work part. 1,256,311 HartWig Feb. 12, .1918 10. A blind fastener forsecuring a resilient 2,123,005 Lombard ug. 2 1938 moulding to anapertured work part, said fastener 2,306,460 Meyer 911 Dec. 29, 1942comprising a sheet metal member having a body 20 2,328,023 Lang Aug. 31,1943 portion adapted for bearing engagement with the 2,454,894 TatomNov. 30, 1948 work part, and marginal moulding attaching por- 2,460,722Waara Feb. 1, 1949 tions bent out of the plane of said body portion,2,471,254 Waara May 24, 1949

